<%@page import="java.util.ArrayList"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
String userName = "admin";
request.setAttribute("userName", userName);
request.setAttribute("user.name", "zhangsan");
ArrayList arrayList = new ArrayList();
arrayList.add(0, "张三");
arrayList.add(1, "李四");
request.setAttribute("arrayList", arrayList);
%>
${userName}<br/>
${requestScope["user.name"]}<br/>
${arrayList[0]}
</body>
</html>